Furnace-door.



R. C. SHERMAN.

FURNACE D'ooR. 4

APPLICATION FILED IAN.4.1915

1,159,282. Patented NQV. 2, 1915. I

L le'. g

wuten@ lENT oEFroE BAY e. SHERMAN, or MILES CITY, MONTANA.

FURNACE-DOOR.

Specification of ALetters Patent.

Application led January 4, 1915. Serial No. 421.

'o all `whom t may concern.'

Be it known that I, RAY C. SHERMAN, a citizen of the'United States, residing at Miles City', in the county of Custer and State of Montana, have invented certain new and useful Improvements in Furnace- Doors, of which the following is a speciiication, reference being had to the accompanying drawings. y

This invention relates to certain improvements in furnace doors and has relation more particularly to a device of this general characterespecially designed and adapted for use in connection with blast furnaces or the like wherein an intense heat is generated; and the object of the invention is to provide a novel and improved door wherein the possibility of the same burning out isl substantially entirely eliminated and whereby the life thereof is greatly prolonged.

The invention consists in the details of construction and in the combinationand arrangement of the several parts of my improved furnace ldoor whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will' be carefully defined in the appended claims. In order that my invention may be the better understood, I will now proceed to describe the same with reference tothe accompanying drawings, wherein- Figure 1 is an elevational view illustrating a door constructed 1n accordance with an embodmcnt of my invention in applied poy,

sition; and Fig. 2 is a view in top plan, de-

tached, of my improved door as herein cmbodied, the overflow pipe carried thereby being shown in fragment.

' As d'sclosed in. the accompanying drawings, F denotes a fragment of a furnace with which my improved door coacts, said door being herein disclosed as mounted for movement in a vertical direction. As herein set forth, my improved door comprises a hollow body of predetermined dimensions having its top open and adapted to contain water. It will be perceived that by having the top of the body open, the door is effeetuall y prevented against injury thereto owing to the expansion of the steam generated therein.

The door A may be constructed in any desired manner as will best meet the requirements of practice, although I find. it of advantage to have the upper marglnal portion thereof reinforced by the stay boltsl l or the like although, if preferred, this may be dispensed with. The upper portions of the face Walls of the door A are, tied or connected bv.

Patented Nov. 2, 1915.

leading from a suitable source of supply,

the discharge end of the pipe 7 terminating a predetermined distance below the upper or open end ofthe door in .order to prevent splashing and the vertical pipe is of suhg'a" length as to afford no obstruction to the, upward movement of the door. In close proximity to the; 'opposite side of the door A, the interior thereof has in communication therewith through the front face thereof the overflow pipe 8, said overflow pipe 8 having its bore of greater diameter than the bore'- of the supply pipe 7. This variance in diameters is necessary as the water delivered through the pipe 7 is under pressure. The overflow pipe terminates in the depending vertical portion 9 telescopically ergaged within the vertically disposed portion 10 of the discharge pipe 11 and such portions 9 and 10 are of such a length as to assure proper coaetion therewith irrespective of the vertical adjustments of the door. It is also to be observed that the vertical portion `10 is of materially greater diameter than the vertical portion 9 in order to keep the water confined at all times. At a point a predetermined distance below the lowermost point of the vertical portion 9, the discharge pipe is reduced, as at 12, to the size of the overflow pipe proper, and such portion 12 is adapted to lead to any suitable point of discharge. In view of the foregoing, it will be readily apparent that the door A will at all times be kept cool, irrespective of the degree of heat within the furnace, as there is substantially a continuous circulation of water through the door.

From the foregoingl description. it is thought to be obvious 'that a furnace door constructed in accordance with my invention is of an extremely simple and comparatively inexpensive nature and 1s particularly Well adapted for use by reason ofv the convenience and facility With which it l may be assembled, and it will also `beobvious that my invention is susceptible of some change and modification rWithout material departure from the principles and spirit thereof and for this reasonll do not Wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown lin carrying outmy rinvention in practice.

l claim: c f l. A door for a furnace comprising a hollow body,rv members reinforcing the iupper marginal portionof the body and intersectthereto.

In testimony whereof lv hereunto alix my signature in the presence of tWo Witnesses.

' RAYC. SHERMAN. `Witnesses:-

f W. R. CALVIN, CHAs. KULTnREs, 

